diff --git a/src/rodsolver.hh b/src/rodsolver.hh
index 4c0721c5169ed05203ff8cb389da3414b557e9eb..56ddf7f902f87f5c257f9086bf08a0473e51d8c8 100644
--- a/src/rodsolver.hh
+++ b/src/rodsolver.hh
@@ -101,7 +101,7 @@ protected:
     const RodAssembler<GridType>* rodAssembler_;
 
     /** \brief The multigrid solver */
-    IterativeSolver<MatrixType, CorrectionType>* mmgSolver_;
+    IterativeSolver<CorrectionType>* mmgSolver_;
 
     /** \brief The hierarchy of trust-region obstacles */
     std::vector<std::vector<BoxConstraint<field_type,blocksize> > > trustRegionObstacles_;